Impossible to evaluate the upgrade: LTS 10.04.2 to 10.10

[Urustu]

Binary package hint: update-manager

Here is the message I get to the upgrade, step 2 "Setting new software repositories"

"""
    Impossible d'évaluer la mise à niveau

    An unresolvable problem occurred while calculating the upgrade:
    E:Erreur, pkgProblemResolver::Resolve a généré des ruptures, ce qui a pu être causé par les paquets devant être gardés en l'état.

    This can be caused by:
    * Upgrading to a pre-release version of Ubuntu
    * Running the current pre-release version of Ubuntu
    * Unofficial software packages not provided by Ubuntu

    Si rien de ceci ne convient, veuillez signaler ce bogue concernant le paquet « update-manager » en y joignant les fichiers du dossier /var/log/dist-upgrade/.

    [Fermer]

"""

>>> See : http://forum.ubuntu-fr.org/viewtopic.php?id=443583

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: update-manager 1:0.134.11
ProcVersionSignature: Ubuntu 2.6.32-28.55-generic 2.6.32.27+drm33.12
Uname: Linux 2.6.32-28-generic i686
Architecture: i386
Date: Sun Feb 20 13:21:21 2011
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
LiveMediaBuild: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager

[Manfred Hampl (m-hampl)]

This can be a duplicate of bug 614993 (and dozens of similar ones)

If the package xserver-xorg-video-nouveau is installed, in several cases the 10.04 to 10.10 upgrade fails with the error message

"Could not determine the upgrade
An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu"

Several persons have reported that after removal of that package the upgrade was successful.

Try this workaround: Open a terminal and enter the command:

sudo apt-get remove xserver-xorg-video-nouveau

and try the upgrade again.

[Urustu (urustu)]

Sucessful. :)

I don't know how this package xserver-xorg-video-nouveau is installed.
My computer is virgin.
As I didn't can install directly Ubuntu 10.10 on this computer, I do install a previous version Ubuntu 9.10 then upgrade to 10.04 LTS for upgrade to 10.10.
I have install a wired webcam (Philips) : a link with this package ?

Thanks.

I could continue my installation and got stuck on another step that I describe can be in another bug and I described in the forum:

http://forum.ubuntu-fr.org/viewtopic.php?id=443681

Cordially,

[RedSingularity (redsingularity)]

Duplicate of master bug 721306. Marking.